Can someone help me with my hit detection? It only likes to trigger half the time...

I have a script meant to be able to damage multiple enemies in once slice, but no more than once. Sadly, it has trouble detecting for hits sometimes, and I have no idea why. Could it be that I have filteringenabled on and I'm playing the animations clientside?

The actual code for those wondering: (please excuse me if I missed some ends, I only took the part that was important and patched it up)

local Blade = Tool.Blade.Touched:connect(function(hit)

        if hit then

        if hit.Name == "Blade" then
            Sounds.Clash:Play()
            return
        end

        local ehum = hit.Parent:FindFirstChild("Humanoid") or hit.Parent.Parent:FindFirstChild("Humanoid")

        if ehum and ehum ~= hum then

            Success = true

            for i,v in pairs(doNotHit) do
                if v == ehum then
                    Success = false
                    break
                end
            end

            if Success ~= false then --Success, ehum has not already been damaged
            ehum:TakeDamage(40)
            end
        end
    end
end)